slope of the Cascades the red fir ceases to be the dominant tree, and between this elevation and the region of perpetual snow, on a few of the highest peaks, rise a succession of forest zones containing principally: (1) yellow pine, red and yellow fir, white fir and cedar; (2) lodgepole pine, white pine, Engelmann spruce and yew; (3) subalpine fir, lovely fir, noble fir, Mertens hemlock, Alaska cedar and tamarack; (4) white-bark pine, Patton hemlock, alpine larch and creeeping juniper.

The mountain valleys are covered with little except grasses; on the higher parts of the mountains there are barren rocks or only a scant growth of timber; but many of the lower mountain slopes, especially those along the western border, are clothed with heavy timber, ponderosa pine, lodgepole pine, Douglas-fir and western larch being the principal species.

The principal trees, after the yellow and lodgepole pines, are the red-fir, so-called hemlock and cedar, the Engelmann spruce, the cottonwood and the aspen (Populus tremuloides).

lodgepole (pine)oy views of the ski slopes or the majestic Rocky Mountains from their private lodgepole pine balcony.

The dominant species are Sitka spruce and lodgepole pine although there is some Norway spruce.